View source for Lauraceae

{{Treatment/ID
|accepted_name=Lauraceae
|accepted_authority=Jussieu
|publications=
|common_names=Laurel Family
|basionyms=
|synonyms=
|hierarchy=Lauraceae
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Lauraceae]]</div></div>
|volume=Volume 3
|mention_page=
|treatment_page=page 26
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Shrubs </b>to tall trees, evergreen or rarely deciduous (<i>Cassytha</i> a parasitic vine with leaves reduced to scales), usually aromatic. <b>Leaves</b> alternate, rarely whorled or opposite, simple, without stipules, petiolate. <b>Leaf</b> blade: unlobed (unlobed or lobed in <i>Sassafras</i>), margins entire, occasionally with domatia (crevices or hollows serving as lodging for mites) in axils of main lateral veins (in <i>Cinnamomum</i>). <b>Inflorescences</b> in axils of leaves or deciduous bracts, panicles (rarely heads), racemes, compound cymes, or pseudoumbels (spikes in <i>Cassytha</i>), sometimes enclosed by decussate bracts. <b>Flowers</b> bisexual or unisexual, bisexual only, or staminate and pistillate on different plants, or staminate and bisexual on some plants, pistillate and bisexual on others; flowers usually yellow to greenish or white, rarely reddish; hypanthium well developed, resembling calyx tube, tepals and stamens perigynous; tepals 6(-9), in 2(-3) whorls of 3, sepaloid, equal or rarely unequal, if unequal then usually outer 3 smaller than inner 3 (occasionally absent in <i>Litsea</i>); stamens (3-)9(-12), in whorls of 3, but 1 or more whorls frequently staminodial or absent; stamens of 3d whorl with 2 glands near base; anthers 2- or 4-locular, locules opening by valves; pistil 1, 1-carpellate; ovary 1-locular; placentation basal; ovule 1; stigma subsessile, discoid or capitate. <b>Fruits</b> drupes, drupe borne on pedicel with or without persistent tepals at base, or seated in ± deeply cup-shaped receptacle (cupule), or enclosed in accrescent floral tube. <b>Seed</b> 1; endosperm absent.</span><!--

-->{{Treatment/Body
|distribution=Pantropical;a few species also in subtropical and temperate regions
|discussion=<p>Genera ca. 50, species 2000-3000 (9 genera, 13 species in the flora).</p><!--
--><p><i>Cassytha</i> is sometimes placed in its own family, Cassythaceae; it is here retained in Lauraceae.</p>
|tables=
|references={{Treatment/Reference
|id=wood1958a
|text=Wood, C. E. Jr. 1958. The genera of the woody Ranales in the southeastern United States. J. Arnold Arbor. 39: 296-346.
}}
}}<!--

--><div class="treatment-key">
==Keys==
<div class="treatment-key-group">
  <h3 class="treatment-key-header" id="key-0">Key to Genera Based on Flowering Material</h3>
{| class="wikitable fna-keytable"
|- id="key-0-1"
|1
|Parasitic vines, leaves reduced to minute scales; stems pale green to yellow-green or orange, twining.
|[[Cassytha|Cassytha]]
|- id="key-0-1"
|1
|Shrubs or trees, leafy; stem various in color but not orange, not twinning.
|[[#key-0-2| > 2]]
|- id="key-0-2"
|2
|Plants deciduous; flowers appearing before or with new leaves.
|[[#key-0-3| > 3]]
|- id="key-0-2"
|2
|Plants evergreen; flowers appearing when leaves mature.
|[[#key-0-5| > 5]]
|- id="key-0-3"
|3
|Flowers in racemes or panicles; leaf blade often lobed.
|[[Sassafras|Sassafras]]
|- id="key-0-3"
|3
|Flowers in pseudoumbels; leaf blade always unlobed.
|[[#key-0-4| > 4]]
|- id="key-0-4"
|4
|Anthers 2-locular.
|[[Lindera|Lindera]]
|- id="key-0-4"
|4
|Anthers 4-locular.
|[[Litsea]]
|- id="key-0-5"
|5
|Flowers in pseudoumbels.
|[[Umbellularia|Umbellularia]]
|- id="key-0-5"
|5
|Flowers in panicles or compound cymes.
|[[#key-0-6| > 6]]
|- id="key-0-6"
|6
|Stamens 3, anthers 2-locular.
|[[Licaria|Licaria]]
|- id="key-0-6"
|6
|Stamens 9, anthers 4-locular.
|[[#key-0-7| > 7]]
|- id="key-0-7"
|7
|Outer 3 tepals shorter than inner 3.
|[[Persea|Persea]]
|- id="key-0-7"
|7
|Tepals equal.
|[[#key-0-8| > 8]]
|- id="key-0-8"
|8
|Leaf blade pinnately veined, domatia absent; terminal bud not covered by imbricate scales.
|[[Nectandra|Nectandra]]
|- id="key-0-8"
|8
|Leaf blade with (1-)3 primary veins, pubescent domatia in axils of main lateral veins; terminal bud covered by imbricate scales, young twigs with clusters of scars from fallen scales.
|[[Cinnamomum|Cinnamomum]]
|}
</div><!--
--><div class="treatment-key-group">
  <h3 class="treatment-key-header" id="key-1">Key to Genera Based on Fruiting Material</h3>
{| class="wikitable fna-keytable"
|- id="key-1-1"
|1
|Parasitic vines, leaves reduced to minute scales.
|[[Cassytha|Cassytha]]
|- id="key-1-1"
|1
|Shrubs or trees, leafy.
|[[#key-1-2| > 2]]
|- id="key-1-2"
|2
|Leaf blade usually lobed (often unlobed).
|[[Sassafras|Sassafras]]
|- id="key-1-2"
|2
|Leaf blade always unlobed.
|[[#key-1-3| > 3]]
|- id="key-1-3"
|3
|Tepals persistent at base of fruit; cupule absent.
|[[Persea|Persea]]
|- id="key-1-3"
|3
|Tepals deciduous; small cupule present.
|[[#key-1-4| > 4]]
|- id="key-1-4"
|4
|Cupule usuallly double-rimmed.
|[[Licaria|Licaria]]
|- id="key-1-4"
|4
|Cupule single-rimmed.
|[[#key-1-5| > 5]]
|- id="key-1-5"
|5
|Fruit at maturity 2 cm or more in greatest dimension; California, Oregon
|[[Umbellularia|Umbellularia]]
|- id="key-1-5"
|5
|Fruit at maturity less than 2 cm in greatest dimension; e of Rocky Mountains.
|[[#key-1-6| > 6]]
|- id="key-1-6"
|6
|Infructescences umbellate or not branched, about 1 cm.
|[[#key-1-7| > 7]]
|- id="key-1-6"
|6
|Infructescences paniculate, more than 4 cm.
|[[#key-1-8| > 8]]
|- id="key-1-7"
|7
|Leaf blade 4 × 1.5 cm or less.
|[[Listea|Listea]]
|- id="key-1-7"
|7
|Leaf blade 4 × 2 cm or more.
|[[Lindera|Lindera]]
|- id="key-1-8"
|8
|Leaf blade pinnately veined, domatia absent; terminal bud not covered by imbricate scales.
|[[Nectandra|Nectandra]]
|- id="key-1-8"
|8
|Leaf blade with (1-)3 primary veins, pubescent domatia in axils of main lateral veins; terminal bud covered by imbricate scales, young twigs with clusters of scars from fallen scales.
|[[Cinnamomum|Cinnamomum]]
|}
</div></div><!--

-->{{#Taxon:
name=Lauraceae
|author=Henk van der Werff
|authority=Jussieu
|rank=family
|parent rank=
|synonyms=
|basionyms=
|family=Lauraceae
|illustrator=John Myers
|illustration copyright=Flora of North America Association
|distribution=Pantropical;a few species also in subtropical and temperate regions
|reference=wood1958a
|publication title=
|publication year=
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V3/V3_272.xml
}}<!--

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[[Category:Treatment]]